68 lines
1.9 KiB
Scala
68 lines
1.9 KiB
Scala
package spark
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import java.io.File
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import java.net.InetAddress
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import org.eclipse.jetty.server.Server
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import org.eclipse.jetty.server.handler.DefaultHandler
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import org.eclipse.jetty.server.handler.HandlerList
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import org.eclipse.jetty.server.handler.ResourceHandler
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import org.eclipse.jetty.util.thread.QueuedThreadPool
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/**
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* Exception type thrown by HttpServer when it is in the wrong state
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* for an operation.
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*/
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class ServerStateException(message: String) extends Exception(message)
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/**
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* An HTTP server for static content used to allow worker nodes to access JARs
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* added to SparkContext as well as classes created by the interpreter when
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* the user types in code. This is just a wrapper around a Jetty server.
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*/
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class HttpServer(resourceBase: File) extends Logging {
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private var server: Server = null
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private var port: Int = -1
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def start() {
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if (server != null) {
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throw new ServerStateException("Server is already started")
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} else {
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server = new Server(0)
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val threadPool = new QueuedThreadPool
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threadPool.setDaemon(true)
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server.setThreadPool(threadPool)
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val resHandler = new ResourceHandler
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resHandler.setResourceBase(resourceBase.getAbsolutePath)
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val handlerList = new HandlerList
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handlerList.setHandlers(Array(resHandler, new DefaultHandler))
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server.setHandler(handlerList)
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server.start()
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port = server.getConnectors()(0).getLocalPort()
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}
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}
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def stop() {
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if (server == null) {
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throw new ServerStateException("Server is already stopped")
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} else {
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server.stop()
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port = -1
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server = null
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}
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}
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/**
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* Get the URI of this HTTP server (http://host:port)
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*/
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def uri: String = {
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if (server == null) {
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throw new ServerStateException("Server is not started")
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} else {
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return "http://" + Utils.localIpAddress + ":" + port
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}
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}
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}
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